Simplify paste by using QgsVectorLayerUtils::makeFeaturesCompatible

src/app/qgisapp.cpp

@@ -8597,70 +8597,35 @@ void QgisApp::pasteFromClipboard( QgsMapLayer *destinationLayer )
   pasteVectorLayer->beginEditCommand( tr( "Features pasted" ) );
   QgsFeatureList features = clipboard()->transformedCopyOf( pasteVectorLayer->crs(), pasteVectorLayer->fields() );
   int nTotalFeatures = features.count();
-
-  QHash<int, int> remap;
-  QgsFields fields = clipboard()->fields();
-  for ( int idx = 0; idx < fields.count(); ++idx )
-  {
-    int dst = pasteVectorLayer->fields().lookupField( fields.at( idx ).name() );
-    if ( dst < 0 )
-      continue;
-
-    remap.insert( idx, dst );
-  }
-
   QgsExpressionContext context = pasteVectorLayer->createExpressionContext();
 
-  int invalidGeometriesCount = 0;
+  QgsFeatureList compatibleFeatures( QgsVectorLayerUtils::makeFeaturesCompatible( features, pasteVectorLayer ) );
   QgsFeatureList newFeatures;
-  QgsFeatureList::const_iterator featureIt = features.constBegin();
-  while ( featureIt != features.constEnd() )
+  // Count collapsed geometries
+  int invalidGeometriesCount = 0;
+
+  for ( const auto &feature : qgis::as_const( compatibleFeatures ) )
   {
-    QgsAttributes srcAttr = featureIt->attributes();
-    QgsAttributeMap dstAttr;
 
-    for ( int src = 0; src < srcAttr.count(); ++src )
-    {
-      int dst = remap.value( src, -1 );
-      if ( dst < 0 )
-        continue;
+    QgsGeometry geom = feature.geometry();
 
-      dstAttr[ dst ] = srcAttr.at( src );
-    }
-
-    QgsGeometry geom = featureIt->geometry();
-    bool geomWasInvalid = geom.isEmpty() || geom.isNull( );
-    if ( featureIt->hasGeometry() )
+    if ( !( geom.isEmpty() || geom.isNull( ) ) )
     {
-      // convert geometry to match destination layer
-      QgsWkbTypes::GeometryType destType = pasteVectorLayer->geometryType();
-      bool destIsMulti = QgsWkbTypes::isMultiType( pasteVectorLayer->wkbType() );
-      if ( pasteVectorLayer->dataProvider() &&
-           !pasteVectorLayer->dataProvider()->doesStrictFeatureTypeCheck() )
-      {
-        // force destination to multi if provider doesn't do a feature strict check
-        destIsMulti = true;
-      }
-
-      if ( destType != QgsWkbTypes::UnknownGeometry )
-      {
-        QgsGeometry newGeometry = geom.convertToType( destType, destIsMulti );
-        if ( newGeometry.isNull() )
-        {
-          continue;
-        }
-        geom = newGeometry;
-      }
       // avoid intersection if enabled in digitize settings
       geom.avoidIntersections( QgsProject::instance()->avoidIntersectionsLayers() );
+      // Count collapsed geometries
+      if ( geom.isEmpty() || geom.isNull( ) )
+        invalidGeometriesCount++;
     }
-    if ( ! geomWasInvalid && ( geom.isEmpty() || geom.isNull( ) ) )
-      invalidGeometriesCount++;
 
+    QgsAttributeMap attrMap;
+    for ( int i = 0; i < feature.fields().count(); i++ )
+    {
+      attrMap[i] = feature.attribute( i );
+    }
     // now create new feature using pasted feature as a template. This automatically handles default
     // values and field constraints
-    newFeatures << QgsVectorLayerUtils::createFeature( pasteVectorLayer, geom, dstAttr, &context );
-    ++featureIt;
+    newFeatures << QgsVectorLayerUtils::createFeature( pasteVectorLayer, geom, attrMap, &context );
   }
   pasteVectorLayer->addFeatures( newFeatures );
   QgsFeatureIds newIds;